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. Author manuscript; available in PMC: 2008 May 2.
Published in final edited form as: Anal Chem. 2008 Jan 10;80(3):713–720. doi: 10.1021/ac7019317

Figure 3.

Figure 3

ESI-FTMS spectra of thiol alkylated (with iodoacetamide, if thiol present), amine methylated, acid amidated (with glycine methyl ester) proteins (A) ubiquitin, (B) myoglobin, (C) RNase A, and (D) lysozyme.